Improvement in apparatus to manufacture starch



w. 'DURYEA.

Making Starch.

No. 22,789. Patented Feb, 1, 1859.

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fl/ki A ll a I I I 71v I: D] LL Witnesses= Mflg? Inventor:

AM. PHOTO-LITHDCQNX. (OSBORNE'S PROCESS.)

T UNITED STATES PATENT Orricn.

WRIGHT 'DURYEA, or GLEN covE, NEW YORK.

IMPROVEMENTJN APPARATUS TO MANUFACTURE STAROH.

Specification forming part of Letters Patent No. 22.789, dated February1, 1859.

To all whom it may concern.-

Be it known that I, WRIGHT DURYEA, of Glen Cove, in the county of Queensand State of New York, have invented certain new and useful Improvementsin Machinery Employed in the Manufacture of Starch; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, making apart of this specification, in which--v Figures 1 and 2 are verticalsections at right angles to each other of the grinding and bolting roomsof a starch-manufactory, Fig. 1 being taken in the line re 00 of Fig. 2,and Fig. 2 in the line 1 y of Fig. 1. Fig.. 3 is a vertical section ofthe bolting-room in the plane indicated by the line z z of Fig. l.

' Similar letters of reference indicate corresponding parts in theseveral figures.

This invention relates to the process of obtaining the starclrwaterfromwhich the starch is subsequently extracted by grinding the grain betweenstones, then washing with waterand passing the ground grain and water,

through bolting-cylinders, regrinding the tailings from said cylinders,rewashing and re bolting, repeating the regrinding ot' the tail- 1ngsand the rewashing and rebolting of the products till nothing of thegrain remains but the bran. In performing this process heretofore it hasbeen common to employ a series of stones arranged one below another onseparate floors of a building, with the bolting apparatus interposedbetween them, and to com mencc the process at the top of the building,and continue it all the way down to the bottom, which has required verylofty buildings, and has rendered the apparatus very difficult ofsupervision.

My invention consists in a'certain system of arranging the grinding andbolting apparatus and ofcombining thesame by means of elevating andconducting apparatus, whereby I am enabled to bring the whole within twostories of a building, the grinding and washing apparatus all on theupper and the bolting apparatus all on the lower story,.so that,besideshaving the apparatus together in such form as to be readily supervisedor tended, it can be driven by a simpler system of shafting, gearing,and belting than when arranged in so many stories; and it furtherconsists in a certain arrangement of certain of the bolting-cylindersand the conductors for carrying away the starclrwater and the tailingsfrom the said cylinders, in combination with the said inclined surface,for the purpose'of obtaining a very simple system of con ductors for theabove purposes.

The invention can be carried out with any number of pairs of stones thatcan possibly be used with as great facility as with two pairs; but Ihave only represented in the drawings two pairs, which are sufficientfor illustration.

A is the upper story, which contains the grinding and washing apparatus,and B the lowerone, which contains the bolting apparatus. A B are thefloors of said stories, and A a floor above the story A.

G O are two pairs of millstones erected in suitable frames D D, erectedupon the floor A, and having the shafts a a of their runners,

geared by spur-gears b b c c, with vertical shafts E E, which are gearedby bevelgears cl (1 c c, with a horizontal shaft, F, which is suspendedin hangers J J from the floor AB G G are washers consisting of vatscontaining rotary stirrers ff, and arranged one near each pair of stonesand in such relation therewith as to receive the grain therefrom throughspouts Z I, provided for the purpose. The stir rers are furnished withpulleys g g, to receive driving-belts h h from pulleys i t in the shaftsE E, The washers are kept continually supplied with water by anysuitable means.

R is a hopper by which the grain is supplied to the first pair ofstones,,O, from above the floor A**. I

H H and I I are the bolting-cylinders, arranged in pairs one aboveanother, below the several pairs of stones. The shafts of the uppercylinders are supported in bearings in hangers K K, suspended from thefloor A and those of the lower cylinders, I I, in bearings in hangersLL, suspended from a frame, M, which is suspended fromthe. same floor.The upper bolting-cylinders, H H, receive at their higher ends the grainand the water from their respective stones and washers through spouts j9', coming from the washers through the floor A i N N are concavetroughs suspended below the upper boltingcylinders, H H, to receive thewater and farinaceous matter passing through the bolting-cloths of saidcylinders;

and 70 7c are pipes leading from said troughs into the higher ends oftheir respective cylinders I I, which have finer bolting-cloths than thecylinders above.

O is an inclined plane or flat table arranged below the lowerbelting-cylinders and extending under the whole series thereof, toreceive the water and farinaceous matter, or what is termed thestarch-water, passing through the cloths of the lower bolting-cylinders;and m is a trough at the lower end of said plane or table to receive thestarch-water from the said plane or table and convey the same by meansof a spout, n, to the cisterns, where the extraction of the starch is tobe effected. This table or plane 0, it is obvious, provides for a freecirculation of air among, between, and through the lower cylinders, I I,thereby preventing the clogging of their fine meshes so rapidly as wouldbe the case if concave troughs partly inclosing the cylinder, like N N,were used.

1) is a spout arranged to receive the tailings from the lower end of theupper bolting-cylinder H of the first pair and conduct them into anelevator, 1, consisting of an endless chain of buckets, for the purposeof their being conveyed by the said elevator into a spout, g, whichconducts them to the second pair of stones to-be reground. The elevatorP is arranged between the first and second pairs of bolting-cylinders, HI and H I, and a similar elevator is to be interposed between theadjacent pairs of cylinders throughout the series, whatever be thenumber, for the purpose of conveying away the tailings from each one of'the' upper cylinders, except the last one of the series, (representedby H,)to be reground by the next pair of stones in the series.

tis a trough, which runs along the whole length of the boltingapparatus, parallel with the trough m, to convey the tailings from allthe lower cylinders, except the last, I, of the series to an elevator,Q, which is arranged at the termination of the series of cylinders, for

'the purpose of carrying the said tailings into a spout, g, whichconducts them into the cylinder I, to be therein subjected to a finalbolting operation.

r is a spout for the escape of the tailings from Land 8 is a spout forthe escape of the tailings from the last, H, of the upper cylinders intothe spout r. The tailings escaping from the last pair of cylinders aresupposed to be nothing but bran. It shouldbe observed that the lower endof the cylinders I I project far enough over the lower edge of the tableor plane 0 to allow them to clear the gutter or trough m, outside ofwhich and parallel therewith the gutter or trough I. is arranged, asshown in Fig. 2.

The bolting-cylinders are severally driven by belts a uv o from pulleyson a short shaft, T, which derives motion through a belt, '10, from avertical shaft, U, which also drives the shaft F- by bevel-gears t 5.The chain of buckets of the elevator P derives motion from a shaft, V,driven by a belt, 6, from the shaft F, and the chain of buckets of theelevator Q derive motion from a shaft, W, driven by a belt, 7, from theshaft V. The driving-gear and belting may, however, be varied and suchan arrangement used as circumstances may .render admissible.

The operation of the machinery is as follows; The grain being fed intothe hopper R is conducted between the first pair of stones, 0, and afterbeing thereby ground passes to washer G, from whence, with the waterwhich washes it, it passes by the spout Z to the first upperbolting-cylinder, H. The milky water escaping through the cloth of thecylinder H into the trough N passes by the pipe 7a to the second lowerand finer bolting cylinder, I, and where it is further strained, andwhat passes through the cloth of the said cylinder drops on the inclinedplane 0. The tailings from the first cylinder, H, pass to the elevatorP, and are carried to the next pair of stones, 0, and reground, andafter being rewashed in the washer Gpass into the second upper boltingcylinder, H. The operations of the cylinders H and I are similarto'those of H and I, and if the series of elevators P, stones, washers,and boltingcylinders were further extended the tailings from H would beconveyed to another pair of stones and reground, afterward rebolted,which operations may be repeated any number of times by a proper numberof elevators, stones, washers, and boltingcylinders. The water passingthrough the meshes of the lower cylinders is all conducted by theinclined plane 0 and trough m to the cisterns, where the starch isseparated, and the fine tailings from all the lower cylinders but thelast one, H, escaping into the trough t and conveyed to the elevator Qat the end of the series, and returned into the last cylinder, I, to besubj ected to a final bolting operation. at the termination of theprocess escapes by the spouts s and r.

Besides the advantage of providing for the free circulation of airthrough the bolting-cylinders, the table or inclined plane 0 providesfor the escape of all the starch-water from the lower bolting-cylindersby a single conductor, m, and permits the use of a single conductor tocarry off the tailings from the lower boltingcylinders, thus saving thetrouble of cleaning, which exists when several conductors are used foreach purpose, as is usually done.

I do not claim to have invented the process of obtaining thestarch-water by frequent repetitions of the grinding, washing, andbolting processes; but

What I claim as my invention, and desire to secure by Letters Patent, is

1. The within-described system of arranging and combining thegrinding,washing, and bolting apparatus, to wit, the arrangement of allthe stones side by side, with their respective washers convenientlyplaced below them, with the arrangement of the bolting-cylinders belowtheir respective stones in horizontal se- The bran leftbolting-cylinders'I I, and inclined plane or table, 0, with the troughsor gutters m and t, substantially as described, whereby I am enabled toconvey, away the starch-water and the tailings from the said cylindersby a single conductor for each purpose.

WVRIGH'I DURYEA.

XVitnesses:

S. H. Warns, J. W. OooMBs.

